Here is my Hijack this log- I am not able to download any new programs or updates and I have tried everything. If anyone can see the problem in my log pleeeaaaassse help me!

Logfile of HijackThis v1.99.1
Scan saved at 8:44:03 PM, on 2/28/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Messenger\msmsgs.exe
C:\LapLink Professional\tsisched.exe
C:\EZ-S.M.A.R.T\EZSMART.exe
C:\Program Files\Microsoft Home Publishing\Mhprmind.exe
C:\Program Files\Linksys\WPC11 Config Utility\WPC11Cfg.exe
C:\WINDOWS\System32\msiexec.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\NavNT\rtvscan.exe
C:\Program Files\NavNT\defwatch.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\PROGRA~1\INTERN~1\iexplore.exe
C:\Documents and Settings\Scott Buth\Local Settings\Temp\Temporary Directory 1 for hijackthis[1].zip\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.yahoo.com/ext/gw/search.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://login.express.cites.uiuc.edu/
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] C:\Program Files\iTunes\iTunesHelper.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [AOL Instant Messenger (TM)] C:\Program Files\AIM95\aim.exe -cnetwait.odl
O4 - Global Startup: Scheduler.lnk = C:\LapLink Professional\tsisched.exe
O4 - Global Startup: EZSMART App.lnk = C:\EZ-S.M.A.R.T\EZSMART.exe
O4 - Global Startup: Microsoft Greetings Reminders.lnk = C:\Program Files\Microsoft Home Publishing\MHPRMIND.EXE
O4 - Global Startup: Instant Wireless Configuration Utility.lnk = C:\Program Files\Linksys\WPC11 Config Utility\WPC11Cfg.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\Office10\EXCEL.EXE/3000
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O12 - Plugin for .avi: C:\Program Files\Netscape\Communicator\Program\PLUGINS\npavi3 2.dll
O12 - Plugin for .exe: C:\Program Files\Netscape\Communicator\Program\PLUGINS\npaudi o.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.co...?1109569701440
O16 - DPF: {9FC5238F-12C4-454F-B1B5-74599A21DE47} (Webshots Photo Uploader) - http://community.webshots.com/html/WSPhotoUploader.CAB
O16 - DPF: {D719897A-B07A-4C0C-AEA9-9B663A28DFCB} (iTunesDetector Class) - http://ax.phobos.apple.com.edgesuite...ITDetector.cab
O20 - Winlogon Notify: NavLogon - C:\WINDOWS\System32\NavLogon.dll
O23 - Service: DefWatch - Symantec Corporation - C:\Program Files\NavNT\defwatch.exe
O23 - Service: Gear Security Service (GEARSecurity) - GEAR Software - C:\WINDOWS\System32\gearsec.exe
O23 - Service: iPod Service (iPodService) - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Norton AntiVirus Client (Norton AntiVirus Server) - Symantec Corporation - C:\Program Files\NavNT\rtvscan.exe